Projecting apparatus



Nov. 12, 1935. A. B. SCOTT PROJECTING APPARATUS Filed May 7, 1932 4Sheets-Sheet 1 11 [torneyy Nov. 12, 1935. A. B. scoT'r PROJECTINGAPPARATUS Filed May '7, 1952' 4 Sheets-Sheet 2 Inventor Atlvmeys Nov.12,1935. A. B. SCOTT PROJECTING APPARATUS Filed May 7, 1932 4Sheets-Sheet 3 VIIIIIIIIIIIIIIIII 1 7,7

2 W n flzam g NOV. 12, 1935. A B. SCOTT PROJECTING APPARATUS Filed May7, 1932 4 Sheets-Sheet 4 "L WJ VIII"! aunun w Patented Nov. 12, 1935 i IUNITED STATES PATENT OFFICE 2,020,521 PROJECTING APPARATUS Albert B.Scott, Los Angeles, Calif., assignor of one-third to J. Rex Cole andone-third to Henry King, both of Los Angeles, Calif.

Application May 7, 1932, Serial No. 609,868 21 Claims. (Cl. 88-18.7)

This invention relates to motion picture probodying my invention, andalso illustrating the jecting apparatus, and this application, as togeneral construction of such an apparatus, and part of its subjectmatter, is a continuation of the way in which the film is controlled toadmy prior application, entitled Projecting appavance it past the lens,or lenses, of the projectratus, filed May 11, 1931, Serial No. 536,352,ing devices, and returned to the magazine. 5 issued as Patent No.1,940,148. Figure 2 is a side elevation of a magazine em- The apparatusemployed for practicing this bodying my invention for cooperating with ainvention involves the use of an endless film, the machine of thischaracter, and in which the film principal portion of which is carriedin a coil, or is carried in the magazine in a single coil; this coils,in amagazine from which the film is fed view particularly illustratesthe path of the film 10 past the lens, or lenses, of the projectingappain passing into the magazine, and also illustrates ratus, and thenfed back into the magazine at the guide at the side of the casingthrough another point on the coil, or coils. which the film passesoutwardly. The magazine The e a Obje of t is nven on i to pr illustratedin Figure 2,. however, is not identical vide simple means for effectingthis. in design to the magazine illustrated in Figure 1, 15

further O j o e nv n n. s t p thatis, it has a horizontal lower facewhich env a m zin p bl of rryin a il f ables it to seat directly on themain casing of the an endless film, and provided with simple meansprojecting apparatus, so that the guide for the for effecting thewithdrawal of the film from the film, as it passes into the magazine, isformed magazine, to enable the same to be advanced directly within thebody of the casing of the 20 past the projecting lens, or lenses, andreturned magazine. a i a y o the Cell in the magazine- TheSe Figure 3 isa side elevation further illustrating operations are effectedautomatically. the magazine, as shown in Figure 2, but with A furtherObject of the i v n is to p the cover plate of the magazine swung open,so

duce a mag ne for C ry ng a relatively large as to show the mechanism onthe interior of 25 ,quantity of film, and provided with means for themagazine i ide elevation, eflecting the automatic feeding of the filmfrom [Figure 3a, is an elevation of the inner face the m a e an t e au mc e u o the of the door or the magazine with the hinged film t he m a inedge of the door broken away.

In the preferred construction of the maga- Figures is a vertical ctithrough t mag- 30 zine, to v t e s m a r lat v ly ar apa t azineillustrated in Figure 2 taken about on the and enable it to carry arelatively long endless fine 4 4 of Figure 2 t upon a greatly fi m, themagazine is constructed t accommodate larged scale, particularlyillustrating the means a plurality annular coils of the film, and is forsupporting and rotating the coil of film, and

provided with means for efiecting passage of the for feeding t game tand t, of t maga- 35 film between the annular coils, and oneloi thezine, obje ts of the inven i n i to p vi the maga- Figure 5 isa-vertical section through a magzine with means for effecting rotationof the azine and projecting apparatus, d illustrating Cells to preventany Possibility of the plies an embodiment of the invention in which acenay rs f the 60118 b o tight 1' ja m as tral opening is provided inthe magazine -to en- 40 hey a b n e t o the magazine able. the picturefrom the film to be projected A further Object 0f the lhvehtlon l5 toimprove through a lens having its axis coinciding with the generalConstruction Of a magazine fer hOldthe central opening through thecasing; this view ing a relatively large supply of film in the form ishown partly in 1ev t10n or a coil. and prov ded wi h simp me fo Figure6 is a longitudinal section upon'an en- 45 aut y feeding the film in o ad u Of larged scale taken in a general radial direction the magazine. Ion the casing illustrated in Figure 3, and pass- Further Objects of thelnvehtlon will pp ing through a guide roller which constitutes ahereinafter. feature of the invention; a number of these roll- Theinvention consists o ov parts d ers are used on the sides of the coil,or coils, to 50 binatlons of parts to be described hereinafter, fcilitat th ot tio f the coils, all of which contribute to produce anefficient Figure 7 is a vertical section corresponding to pro'ectingapparatus. the bottom portion of Figure 4, but illustrating A preferredembodiment of the invention is another embodiment of the invention inregard described in the following specification, while the to themechanism for driving certain rollers, or 55 broad scope of theinvention is pointed out in rotary members, which are preferablyemployed the appended claims. in the construction to support the sagportion In the drawingsof a coil, and which cooperate to assist inefiect- Figure l is a side elevation, partly broken away, ing therotation of the coil. and illustrating the projecting apparatus em-Figure 8 is a side elevation of .a magazine 6 illustrating anotherembodiment of the magazine for accommodating a relatively large supplyof film disposed in several coils; in this view, the principal portionof the cover plate of the magazine is broken away, and only the portionof the cover plate near the hinge is illustrated; this view may beregarded as a section on the line 8-8 of Figure 9, but upon a reducedscale.

Figure 9 is a'section taken on the line 99 of Figure 8, but upon agreatly enlarged scale, and particularly illustrating the means forsupporting the coil in the magazine effecting its rotation, andeffecting its feeding movement between the different coils and into andout of the magazine.

Figure 10 is a front elevation of the driving plate which lies againstthe sides of the several coils in the magazine that is driven tofacilitate rotation of the coils; this view particularly illustrates thesectional character of this driving plate, and also a portion of thecasing of the magazine broken away.

Figure 11 is a horizontal section taken about on the line ll-li ofFigure 8, and particularly illustrating the means for driving the feeddevice which feeds the film into the magazine; in this view, portions ofthe walls of the casing and adjacent parts are broken away.

Before proceeding to a more detailed description of the invention, itshould be stated that a projecting apparatus illustrated as in Figure 1is employed for enabling pictures to be projected in differentdirections, though using a single endless film. 7

As the film passes through the projecting apparatus, it moves past anuppermost lens that projects a picture in one direction, and before itleaves the apparatus, it passes another lens that projects a picture ina general opposite direction from the first picture. Between theuppermost and the lowermost lens, the film has a twist in it whichbrings it into a plane substantially at right angles to the plane whichthe film occupies in passing the other lenses, and at this point, thefilm cooperates with another lens to project a picture in a directionsubstantially at right angles to the direction in which the other twolenses project their pictures. This part of the invention is a divisionof my prior application referred to above.

In the type of machine illustrated in Figure 1, where the film is not ofgreat length, the magazine is constructed as illustrated in Figures 2and 3 to accommodate a single annular coil up to 650 ft. for example.

In its general construction, the magazine illustrated in Figure 3 isprovided with means for supporting a single annular coil, and isprovided with means for efiecting rotation of the coil in the casing.The magazine is provided with means for feeding film into it andwithdrawing the film from it.

In the embodiment of the invention illustrated, the film is fed into themagazine so as to pass onto the outer periphery of the coil, and thedelivery feed device, which delivers the film from the coil, takes thefilm from the inner periphery of the coil.

In practicing my invention, however, the magazine may be constructed soas to accommodate a relatively long endless film. When in use, the filmwill pass automatically from this magazine, through a projectingapparatus, and then return automatically and be fed back into themagazinc.

Where it is necessary to accommodate a large supply of film in themagazine, I prefer to construct the magazine so that it will carry aplurality of concentrically disposed annular coils. The magazine isconstructed so that these coils are caused to rotate in the feedingdirection, and 5 cooperate with feeding mechanism to feed film that haspassed the projecting lens back into the magazine.

In the preferred construction illustrated, the film, returning from thelens, is fed onto the 10 outer periphery of the outermost coil, and thefilm that is to go to the lens is drawn oil from the inner periphery ofthe innermost coil.

One of the problems in handling a coil of this character in a magazineis to provide for the gen- 15 eral advance of the individual layers ofthe coil at approximately the same linear speed. I have found inpractice that it is not merely sufiicient to rotate the coil as a wholeat a certain annular velocity, but it is necessary to insure that thegen- 20 eral advance of the individual layers of the film in the coilwill be at the same linear speed. This difficulty is not so marked in amagazine of the type shown in Figure 3 for handling a relatively smallquantity of film, but in handling a large 25 supply of film in amagazine, it is desirable to divide the supply up into several coils,and it is also preferable to construct the driving plate which assistsin effecting the advance of the film in the coils, in sections, thefaces of which touch the sides of the coil, and these sections are notdriven at the same annular velocity, but in such a way that their faceswhere they touch the film move at substantially the same linear speed.In this way, a tendency to jamming or tightening of 35 the film at anypoint in the magazine is avoided. The use of several annular coils inthis way makes it advisable to provide feeding devices for feeding thefilm from one coil to the next.

In the present embodiment of the invention, as 40 illustrated in Figure8, the film passes onto the outer periphery of the outermost or largestcoil, and passes from the inner periphery of this coil to the outerperiphery of the next coil. In the present instance, the next coil is anintermediate 5 coil in view of the fact that I have illustrated three ofthese annular coils. From the intermediate coil, the film passes to theinnermost coil, and the central feeding device operates to withdraw filmfrom the inner periphery of the inner coil.

In the operation of the apparatus illustrated in Figure 1, an endlessfilm l is fed down from a holder or magazine 2, in a position to presentits fiat face at right angles to the axis of a lens 3 il- 55 lustratedin dotted outline. As the film passes below the lens 3, it passesthrough two sets oi guide rollers I (illustrated in dotted lines) thatform a twist in the film, so as to turn its plane through an angle of180 before it passes into the guide of the lowest projecting mechanismof the lens 5; in other words, at an intermediate point between thelenses 3 and 5, the flat" of the film is disposed at right angles to theaxis of an intermediate lens 6, thereby enabling this lens to pro- 55ject pictures onto a screen which lies in a plane substantially at rightangles to the plane of screens which could receive the pictures from thelenses 3 and 5. The lenses 3, 5, and 6 are, of course, located adistance apart corresponding to 70 the width of the frames or pictures,of the film measured longitudinally with the film.

In order to enable the pictures to be properly framed, I provide thefilm beyond the lowest lens 5 with a framing loop I in which fioats" aroller 76 lower side of the coil,

8 (indicated in dotted lines) carried on a framing lever 9, and thislever is provided with a handle which can be moved whenever desired tolower or raise the "frames at the lenses. Beyond the framing roller 8,the film passes downwardly out of the casing in or the apparatus anddown into a guide duct 1 I which completely encloses the film and coolsthe film while guiding it back to a point near the upper side of themagazine 2. This guide duct H is curved at its lower endto hold a loopin the film which is advancing through it.

At the upper end of the guide chute, it connects to the upper side ofthe magazine 2, and at this point, the film passes over a feed device l2which passes the film into the magazine and wraps it on the outerperiphery of a coil I3 of film within the magazine. The film in the coilis driven in a rotary direction, and at the inner periphery ll of thecoil, the film is drawn of! from the coil and passes down out oi themagazine through a guide IS.

The apparatus illustrated in Figure 1 is provided with the usual lampssuch as the lamps IE to cooperate with their corresponding lenses and anelectric cord l1 may be provldedwith a sound reproduction deviceindicated sue forreproducj ing sounds relating to the pictures projectedfrom 5:

the film. i I

In Figures 2 and 3, I illustrate a; magazine of the same typeillustrated in Figure 1, that is to say, it is capable of accommodatingasingle coil of film. However, the design of this magazine -difiersslightly from that of the magazine-illustrated in Figure 1', because thebase of thlsmag V azine is constructed to seat directly on the upper endof a casing'such as the casing 18 illustrated in' Figure 1. v Themagazine illustrated in Figures 2 and 3 comprises the casing" i9 form,that is, it is in a form of a relatively thin drum, and this casing isprovided with a mull-- able cover plate 28 which is preferably connectedto it by hinge connection 2|.

The details of this magazine illustrated in Figure 3 are shown morefully in Figure 4 which is a sectional view. The interior of the casing.is provided with means for supporting and rotating a coil 22 which coilis of annular form. For this purpose, I provide an annular'wall 23 whichis attached to the back wall 24 of the casing and projects inwardly fromthe back wall, and in this wall 23, I provide a plurality of smallrollers 23', the faces of which project inwardly toward the axis of thedrum so as to guide the outermost layer of film in the coil. -Whilethese small rollers 23 are disposed circumierentially around the entireouter periphery of the coil 22, it should be understood that theserollers are merely idlers, and simply rotate freely when the outer layerof the coil happens to engage them. The coil is supported preferably bytwo sets of rollers, an inner set consisting of a plurality ofcircumferentially disposedrollers 25 disposed in the opening at thecenter of the coil, and an outer set of rollers 26 which are mountedunder the These latter rollers will support the coil if it sags downonto them, and this lower set of rollers is preferably power driven, andif the coil sags out then they will cooperate with a rotary drivingplate 21 to efiect a rotation of the coil in the direction indicated bythe arrow in Figure 3, that is, in anti-clock-wise direction as viewedin this figure. The rollers 25 are preferably mounted on the inner faceof the cover 20.

'In this way, it will be seen that between the These gears 38 Y tocooperate with the shaft 40 to drive the feed roller 32 at the properspeed to give the film the of substantially circular shaft31 is providedwith a gear 42 (see Figure 0 casing of the machine, and is received inan arcu- 5 ate guide duct 29 formed in the casing, and this duet may beprovided with guiding rollers 30 over which thefllm passes on its way toa feeding device}! which is located in the casing above the coil. Thisfeeding device comprises a feed roller 10 32 with the usual sprocketteeth 33 which engage the usual perforations near the edges" of the filmso as to pull the film up through the guide 29 and pass the samedownwardly between two. sets of guide rollers 34 mounted in the frame 15plates 35. From this point, the film passes downwardly through a smallopening in the wall 23 vided with a shaft 31 which, extends through theback wall 24 of the casing and is provided with a pinion orosmall gear38 which meshes with a gear 39 carried on a driving shaft 40. a0

and 39 are properly proportioned same linear speed which it has inpassing the projecting lenses illustrated in Figure l. 35

Z I Cooperating with the feed roller, the usual spring pressed presserroller 4| may be provided .to hold" the film-against the feed roller 32.

Inorderto drive the driving plate 21, the

4) which meshes with a long pinion 43 which is anidler' mounted in thecasing, and which engages on its under side with a gear wheel 44 in theform of a ring which is attached to the back face of the 'driving'plate21.

. t5 In order to drive the lower rollers 26, the under 'side of thisgear wheel oryring- 44 meshes with pinions 45 carried on the shafts ofthe rollers 28 respectively. These rollers 26 are supported in suitableroller bearings 46', and a similar roller 5 bearing 41 may be providedfor the pinion 43. If desired, a similar roller bearing may be providedfor the shaft 81. I 4

In order to insure that the side of the coil will rest against the faceof the driving plate 21, the 5:; magazine may, if desired, be mounted ina slightly inclinedpositlon, but I prefer to mount the *magazine casingwith its middle plane in a substantially vertical plane and I cause thecoil to hold itself up against the driving plate 21 by making therollers 26 of slightly conical form with the large end of each rollerdisposed remote from the driving plate. With this form of roller, itwill be evident that the coil tends to slip on the rollers 26 overagainst the driving plate. This action cooperates with side presserrollers that engage the side of the coil as will be presently described.

- v The magazine isprovided with means for withdrawing film from it, andin the present instance, thefilm is withdrawn from the-inner periphery70 of the coil. Referring to Figure 3, it. will be noted that one of therollers 25 disposedat a low level performs the function-of a guideroller over which the film 28 passes in an'inclined upward direction sothat it can pass in a loop over 75 the upper side of a delivery feedroller 48. This feed roller is indicated in dotted lines within thecasing in Figure 3, because it is supported on the cover plate 20, andwhen the cover plate is open, this feed roller moves away from theinterior of the casing as the cover or door is swung open. This feedroller is carried on a shaft 48 (see Figure 4) which carries pinion 50at its inner end and this pinion meshes with and is driven by aninternal gear wheel in the form of a ring that is set in a recess 52 inthe inner face of the driving plate 21.

The outer end of the shaft 49 projects on the outer side of the coverand is provided with a thumb head 53, the purpose of which will bedescribed hereinafter.

Adjacent to the shaft 49, a small presser lever 54 is provided(indicated in dotted lines in Figure 3) and this presser lever carriesthe usual presser roller 55, also indicated in dotted lines which holdsthe film against the feed roller 48. This feed roller is provided withthe usual sprocket teeth to engage the perforations in the film. Thepresser lever 54 is attached on the inner side of the cover 20 by meansof a pin 56 (indicated in dotted lines in Figure 3).

In order to assist in holding the coil 22 up against the driving plateor disk 21, I provide a plurality of spring pressed rollers 51 which aremounted on the inner face of the cover plate. These rollers arepreferably of conical form, and in this type of machine, the large endsof the rollers are disposed inwardly in a radial direction with respectto the central axis of the casing. The details of the mounting on one ofthese rollers are illustrated in Figure 6, and each roller is receivedin a roller pocket 58 either formed in the wall of the plate or formedin a small roller housing 59 which is fastened on the outer side of thecover plate by machine screws 60. In order to spring press these rollerstoward the coil, the shaft 6! of each roller is carried in the ball 62at each end and each of these balls is located at the inner end ofspring barrel 63 formed in the end of the roller housing. Each springbarrel carries a coil spring 64 which thrusts against the outer side ofthe ball, and the force of the spring exerts itself to press the innerface of the roller toward the coil. A screw plug 65 is provided in eachspring barrel which may be screwed up more or less to adjust the amountof compression of the springs 64.

In order to facilitate the withdrawal of the film from the delivery feedroller 48, the cover plate 20 is provided with a substantially verticalguide 66 (see Figures 2 and 4). This guide extends downwardly from apoint near an opening through the cover plate at its center, and theouter wall 61 of the guide preferably inclines away from the casing in adownward direction. Near the lower end of this guide 66 two oppositelydisposed guide rollers 58 are provided between which the film 28 passesdownwardly as it passes into the main casing of the projectingapparatus.

Just above the upper end of this guide way 66 and within the casing, Iprefer to provide an inclined guide roller 69 (see Figure 4). The axisof this roller is inclined so that it is raised toward the cover plate,and the axis of the roller is nearly in a vertical plane. This enablesthe roller 69 to cooperate more effectively with the guide roller 68which is mounted in the interior of the guide 61 in an inclined positionin a horizontal plane. In this way, as the film passes out of themagazine, it is delivered from the roller 68 with the flat of the filmdisposed in about the right plane to enable it to pass down into themain casing of the machine. The driving plate 21 is supported at itscenter in a suitable ball bearing (see Figure 4).

The construction shown .in Figure 4 shows the rotating of the rollers 26directly through pinions 45 meshing with the gear 44 which drive theserollers 26 at substantially the same peripheral speed as that of thefeed roller 32. This, of course, will depend somewhat on the ratio ofthe gear wheel 42 and its pinion 43. If it is desired to drive therollers 26 at a considerably greater peripheral speed so as to 'enablethem to give greater assistance in the general rotary movement of thecoil 22, I may drive these rollers by the means indicated in Figure 7.Now to accomplish this, I provide the back of the driving plateindicated by the numeral 21a with an internal gear wheel H which mesheswith the pinion I2 carried in a suitable bearing 13 in the back plate24a of the casing. This pinion is rigid with a larger gear 14 whichdrives a gear train that is mounted in the back wall 24a which steps upthe peripheral speed and which includes an idler 16 which drives a gearwheel ll on the shaft 18 of the roller 26a.

In this connection, it should be understood that this construction mustbe duplicated for each of the rollers 26a which correspond to therollers 26 of Figure 3.

Referring to Figures 8-11, another embodiment of the invention will nowbe described in which the supply of film is maintained in a magazinecasing 19 in a plurality of annular concentric rolls or coils. In thepresent instance, I construct a magazine so that it will accommodatethree such rolls or coils indicated by the numerals 80, 8|, and 82. Inorder to accomplish this, the casing 18 is provided with a cover plate84 which is provided on its inner face with a plurality ofcircumferentially disposed rollers 85 disposed in three concentric sets.These rollers are indicated generally by the reference numerals 85, butthe outer set is indicated specifically by the reference numeral 85a andthe intermediate set by the reference numeral 85b, and the innermost setby the reference numeral 850. These rollers are rotatably mounted oncircumferentially disposed pins 86 which project inwardly on the innerside of the cover plate 84.

The film 81 is guided up into the casing 18 in substantially the samemanner indicated in Figure 3, that is, it passes up an arcuate guideduct 88 provided with guide rollers 89 which enables the film to passover a feed roller 90 at the upper side of the casing with whichcooperates the usual presser rollers 9| When the machine is inoperation, the film passes onto the outer periphery of the outermostcoil 80. Between the inner periphery of the outermost coil 80 and outerperiphery of the intermediate coil 8l, means are preferably provided forthe feeding of the film from the outer coil to the intermediate coil.For this purpose, a feed roller 82 is provided similar to the feedroller 80, and this feed roller 92 and its cooperating presser roller 93is carried on the cover plate 84. This feed roller 92 is mounted in aposition to take the film from one of the rollers 85a and wrap it downonto the outer periphery of the coil 8|.

Between the coils BI and 82, a similar feed roller 94 is provided whichcooperates with a presser roller 95, and these parts are also carried onthe cover plate 84. This feed roller 94 operates to take the film off ofthe inner periphery of the intermediate coil III and wrap it on theouter periphery of the innermost coil 02.

The magazine is provided with a delivery feed roller 96 with itscooperating presser roller 91, and this feed device is also carried onthe cover plate 84 and operates like the feed roller 40 of Figure 3 totake the film off of the inner periphery of the inner coil 82, and passit down over the guide roller 98 and out of the magazine through a guidenot illustrated, but similar to the guide 66 described in connectionwith Figure 3. This feed roller 96 is actuated in the same way as thefeed roller 40 of Figure 3, that is, through the rotation of the drivingplate of the magazine. However, in this case, the driving plate is notformed of a single piece as in Figure 3, but is formed of a centersection or center plate 99, and annular sections I00, I02, and othersections further out on the driving plate to be described more fullyhereinafter. The sections 99, I00, and I02 all touch the side of theinner coil 02. In order to drive the said roller 96, the inner end ofthis roller is provided with a pinion I03, which meshes with the teethof an internal gear wheel I04 which is counter-sunk in the inner face ofthe center plate 99. These sections 99, I00, and I02 of the drivingplate are not driven at the same angular velocity, but are driven sothat their peripheries move at substantially the same peripherial speedwhich is substantially the same as the speed at which the film isadvanced through the feeding device. In order to accomplish this, thesesections are provided with integral tubular hubs 99a, I00a, and I02a,the outer hub I02a, being rotatably mounted in abearing I05 formed atthe center of the back plate 83 of the casing. These hubs are providedrespectively with pinions I06 which are of gradually increasing diameterin an outward direction so that the pinion of the hub I02a is of thelargest diameter; and these pinions mesh respectively withcorrespondingly stepped driving gears I01; in other words, the gearratio for the hub of the center plate 99 gives a greater number ofrevolutions per second than the corresponding drive for the sec tionI00. Likewise, the section I02 is driven at a slower angular velocitythan the intermediate section I00. In this way, these three sections aredriven at substantially the same peripheral speed. The pinion thatdrives the innermost hub 99a is rigidly attached on a center shaft I08that rigidly carries the hub 99a.

The gears 'I0I are carried on a common shaft I09 which is rotatablymounted in suitable bearings and provided with a gear such as a spiralgear IIO which is driven by meshing with a corresponding gear on adriving shaft (not illustrated).

The feed rollers 92, 94 and 96 all have a common drive which'is effectedthrough the medium of a substantially radial counter-shaft III carriedon the cover plate 84 and carrying a gear such as spiral gear H2 at itsinner end that meshes with a corresponding gear on the shaft I I3 of thefeed roller 96. Similar gearing H4 and H5 is provided for driving ashaft of the feed rollers 92 and 94 off of the counter-shaft I I I andthrough the medium of the extended shafts of these feed rollers asindicated in Figure 9.

In order to assist in effecting the rotation of the outer coils and III,the driving plate includes a number of annular sections beyond thesection I02 (see Figure 9). In the present instance, I provide annularsections I I6, H1, H8 and H9, and these sections are all driven so thatthey rotate at substantially the same peripheral speed as the innersections 99, I00, and I02. In

order to accomplish this, I provide the section or o annulus I02 with agear wheel I20 which meshes on its outer side with a pinion I2I, theshaft of which extends through to the outer side of the back wall 03 ofthe casing where it carries the gear wheel or pinion I22. This pinionI22 drives 10 a gear train I23 that effects the driving of all of theouter sections or annuluses II6 to H9 inclusive.

Each of these sections or rings, for example, the ring I I6 is driven bythe same means; in other 5 words, the driving means is duplicated forall of the rings. This driving means consists of a gear wheel I24attached to the back of each ring, and meshing on its outer side with adriving pinion I25 which is rigid on the shaft of a gear I26 of 20 thegear train I23. Each gear I26 is driven by an idler I2I in the geartrain.

Each ring I24 is supported for rotation on a plurality of rollers suchas the roller I20 that is received in a groove I29 formed on the innerg5 face of the ring. These rollers are rotatably mountedcircumferentially on the inner face of the back wall 03 of the casing.

In order to prevent any possibility of a crack being formed between thesegments or rings of 30 the driving plate, the meeting faces or edgefaces I30 of the center plate 99, and the sections I00 and I02 arepreferably inclined or conical as indicated. For a similar reason, themeeting faces I3I between the outer annuluses I I6I I9 are also of 35inclined or conical form.

It will be noted that the innermost coil 02 is in contact with thecenter section 99, and the two sections I00 and I02. As these sectionsare all driven at approximately the same peripheral 40 speed they urgethe different wraps of the coil 82 to advance circumferentially atsubstantially the same linear speed. 1

The middle coil BI is in contact with the two sections or rings H6 andIII which also rotate 5 at substantially this same peripheral speed andurge the wrapsor layers of the coil 0| to advance circumferentially atthe same linear speed.

The outermost coil 00 is engaged by the two outermost annuluses H0 andH9. 50

The coils are all pressed yieldingly up against the driving plate whichis composed of the sections and annuluses described above, by means of'a plurality of substantially conical rollers I32 which are mounted inthe cover plate 84. These 55 rollers are constructed and mountedsimilarly to the conical rollers 51 of Figure 3a, but in the presentinstance, these rollers are mounted with their large ends toward thecentral axis of the magazine. If the rollers are mounted in this 60 way,the peripheral speed at the large ends of the rollers being higher thanthe peripheral speed at the outer ends will tend to speed up theinnermost wraps of each coil, and this is advantageous because at thesepoints, there may be a 5 tendency for the film to lag. These rollers areprovided with springs and mounted substantially as illustrated in Figure6.

In order to effect the driving of the feed roller (see Figure 8), Iprefer to provide a construc- 70 tion such as that illustrated in Figure11. In this construction, the outermost drive pinion I25a that drivesthe outermost ring II9 also operates to drive an idler I33 mounted forrotation in the casing, and this idler drives a gear I34 which is 75rigidly mounted on the shaft I of the feed roller. In Figure 11, thefilm 81 is indicated in dotted lines passing over this feed roller.

In Figure 5, I illustrate a magazine embodying my invention mounted withits central axis in line with a projection lens assembly I38. In. thisembodiment of the invention, I employ a tubular center shaft instead ofemploying the closed center construction illustrated in Figure 4, andthis enables me to provide alining openings I31 in the casing wall, andat these openings the projecting lamp I38 is supported on one side andthe lens assembly I 36 on the other side. The film I39 is then pulleddown from the coil I48 with a step by step movement past the opening I31with 9. Geneva feed device, and other mechanism such as illustrated inmy co-pending application after which the film is returned to the outerside of the coil I40 by means described in this application; in thisway, a very compact construction for the projecting apparatus results.

The mode of operation of the entire apparatus will now be briefiystated:

Referring to Figure 1, the film I is pulled down by the usualstop-movement feed device so as to draw it past the three lenses 3, 8,and 5 in succession. In doing this, the film is drawn off from thecenter of the coil I3. In passing from the lens 3, the film is guidedinto a twist, and at this twist, the film passes the lens 6. Beyond thispoint, the plane of the film rotates through another 90 at which time itpasses the lens 5 and thence past the feed mechanism (not illustrated)and the film then, returns through the guide II to the upper side of themagazine 2 where it is fed onto the outer periphery of the coil I3.

In the single coil type of magazine illustrated in Figure 3, the film 28passes up through the curved guideway 29 and passes over a feed roller32 which is continuously rotated at the linear speed at which the filmtravels past the lenses. As the film leaves this feed roller 32, itpasses through guide rollers 34 which lay the film on the outerperiphery of the coil 22. This coil is rotated in the direction of thearrow due to the rotation of the driving plate 21 and the rotation ofthe rollers 26. As the coil rotates, the film 28 passes inwardly overone of the guide rollers 25 and passes over a feed roller 48 from whichthe film passes out of the magazine to the guide 66, and thence downpast the projecting lens or lenses of the projecting apparatus.

The delivery feed roller 48 that delivers the film from the magazine is,of course, also driven at a speed which will advance the film at thesame rate, but the film is drawn past the lenses by the regular feedapparatus associated with the lenses. In connection with the cover plateor swinging door 20 (Fig. 4), it will be noted that this door carriesthe pinion 58 that is mounted on the shaft of the feed roller 48, and ifthe teeth of this pinion did not happen to strike the teeth of theinternal gear wheel Si in the proper position, the door would not close.For this reason, I provide the shaft 49 of this roller with the thumbhead 53 which enables the pinion to be adjusted slightly by rotation ineither direction. This enables the pinion to be brought into properposition to mesh with the teeth of the gear wheel 5 I.

The coil is also spring pressed toward the driving plate 21 through theagency of the conical rollers 51. In the multiple coil magazineillustrated in Figures 8 to 11, inclusive, the film 81 enters the guide88 of the magazine from below (see Figure 8), and passes over a feedroller 90,

and this feeds the film onto the periphery of the outermost coil 80.This coil is supported and guided on the circumferentially disposedrollers 85, and as the coils rotate the film passes the feed roller 82and is wrapped onto the outer periphery of the intermediate coil 8|.

The intermediate coil 8| is supported on the intermediate ring of guiderollers 85b, and as this coil rotates, the film from it passes over theguide roller 84, and is led onto the outer periphery of the innermostcoil 82. The inner periphery of this coil is supported on the ring ofguide rollers 85c, and from this point, the film passes out over adelivery feed roller 98 that advances the film out of the magazine.

Due to the sectional character of the driving plate for this magazine,the wraps of the different coils are advanced substantially at the samelinear speed. In other words, although the coils rotate as a whole theirinner wraps are moving at a faster angular velocity than their outerwraps. On account of the fact that the lower part of each coil sagsdown, the layers in these sagged portions are slightly separated fromeach other. Most of the relative movement of the layers of film occursin these sagged parts where the film layers are not touching each other.This is most advantageous as it avoids rubbing and wear on the coatingcarried by the film.

In the construction shown in Figure 5, the film I3! is drawn down with astop movement apparatus to bring the frames of the film in successionpast the central openings I31 in the casing which aline with the lensassembly I36, and the lamp I38. With this construction, it is notnecessary to mount the magazine on the upper side of the casing such asthe casing IIJ illustrated in Figure 1.

Although I have illustrated the multiple coil type of magazine as beingcomposed of three coils, it is obvious that if desired four or more suchcoils can be employed if the length of the endless film should make thisnecessary. Passing the film through the duct II has a cooling effect onthe film before it passes back into the coil in the magazine.

It is understood that the embodiment of the invention described hereinis only one of the many embodiments this invention may take, and I donot wish to be limited to the practice of my invention, nor in myclaims, to the particular embodiment set forth.

What I claim is:

1. In a film magazine for a projecting machine, the combination of acasing, means associated with said casing for supporting and rotating aplurality of concentric annular coils of film constituting portions ofthe same film, a plurality of circumferentially disposed guide rollersmounted in the casing to rotate on relatively fixed axes and locatedbetween the said coils, means for effecting passage of the film betweenthe annular coils, and means for feeding film from the casing.

2. In a film magazine for a projecting machine, the combination of asubstantially circular casing having means for supporting and rotating aplurality of concentric annular coils of film constituting portions ofthe same film, a plurality of circumferentially disposed guide rollersmounted in the casing to rotate on relatively fixed axes and locatedbetween the said coils, means for guiding the film to pass the samebetween the annular coils, and means for feeding film from the casing.

3. In a film magazine for a projecting machine,

the combination of a substantially circular casing having means forsupporting and rotating a plurality of concentric annular coils of filmconstituting portions of the same film, a plurality of circumferentiallydisposed guide rollers located between the coils and mounted forrotation on fixed axes, means for guiding the film to pass the samebetween the annular coils, means for feeding film into the casing topass into one of said coils, and means for feeding film from the casingand for effecting passageof the film from one to another of said coils.

4. In a film magazine for a projecting machine, the combination of acasing, means associated with the casing for supporting and rotating aplurality of concentric annular coils of film constituting portions ofthe same film, a plurality of circumferentially disposed guide rollersmounted to rotate on fixed axes in the casing and located between thesaid coils, means for guiding film into the casing and into theoutermost of said annular coils, means for guiding film to pass thesame'between the annular coils, and means for feeding the film from thecasing at the innermost of said annular coils.

5. In a film magazine for a projecting machine, the combination of acasing, means associated with the casing for supporting a plurality ofconcentricannular coils of film, a driving plate engaging the sides' ofsaid coils and having relatively movable concentric annular sectionscorresponding to the different coils, means for support ing said coilsout of contact with each other, said casing having means for guiding thefilm'to pass between the annular coils, and means for driving thesections of the driving plate of larger diameter at a relatively higherangular speed than the inner sections so as to maintain a substantiallyvconstant linear speed for the film in the diflerent annular coils. v

6. In a film magazine for a projecting machine, the combination of acasing, means associated with the casing for supporting a plurality ofconcentric annular coils of film, a driving plate engaging the sides ofsaid coils and having relatively movable concentric annular sectionscorresponding to the different coils, said casing having, means forguiding the film to pass between the annular coils, means for drivingthe sections of the driving plate of larger diameter at a relativelyslower angular speed than the inner sections so as to maintain asubstantially constant linear speed for the film in the differentannular coils, feeding means located where the film is guided betweenthe coils, and means for driving the said feeding means.

'7. In a film magazine for a projecting machine, the combination of acasing, means associated with the casing for supporting a plurality ofconcentric annular coils of film, a driving plate engaging the sides ofsaid coils and having relatively movable concentric annular sectionscorresponding to the different coils, said casing having means forguiding the film to pass between the annular coils, means for drivingthe sections of the driving plate of larger diameter at a relativelyslower angular speed than the inner sections so as to maintain asubstantially constant linear speed for the film in the differentannular coils, feeding means located where the film is guided betweenthe coils, means for driving the said feeding means, means for feedingfilm into the casing, and means for feeding film out of the casing.

8. In a. film magazine for a projecting machine,

annular coils, said sections' of the driving plate,

having substantially conical meeting faces operating to prevent theedges of the film from passing into the joints between said sections.

9. In a film magazine for a projecting machineythe combination of acasing, means associated with the casing for supporting a plurality ofseparate concentric annular coils of film, each coil consisting of apluralityvof layers of the film, means for holding the annular coilsseparated from each other, a driving plate engaging the sides of saidcoils and having relatively movable concentric annular sectionscorresponding to the different coils, said casing having means forguiding the film to pass it between the annular coils, gear wheelsattached to the said annular sections respectively, pinions.corresponding to the gear wheels;for driving the sectionaand a geartrain for driving the pinions so that the pinlons. and the. gear wheels,have substantially the same peripheral speed.

10. In a film magazine for a projecting machine, the combination of acasing, means for supporting a coil of film therein, a driving platehaving a plurality of annular concentric sections for engaging the sideof the coil to rotate the coil, means for feeding film into the. coil,means forwithdrawing film-from the coil, said annular sectionshavingconcentric tubular hubs,

and means for driving said hubs. at different angular velocities sothatvthe annular sections of smaller diameter moveat substantially the samelinear speed as the outer annular sections, said concentric sectionscooperating to advance the film at substantially the same linearvelocity V at all points in the coil.

, 11. In a film magazine for a projecting machine, the combination of acasing, means for supporting a coil of film therein, means for feedingfilm into the coil, means for feeding film out of the coil, a drivingplate for engaging the side of the coil for advancing the same, having acenter section, and having annular sections concentric with said centersection, and means for driving said center section and said annularsections at different angular velocities so as to enable the drivingplate to transmit motion to the plies of the coil at substantially thesame linear velocity throughout the entire coil.

12. In a film magazine fora projecting machine, the combination of acasing, a plurality of sets of circumferentially disposed rotary guidemembers located in the same plane substantially at right angles to acommon axis, dividing the interior of the casing'into a pluralityofa'nnular concentric coil chambers of progressively increasing diameterand enabling the magazine to carry a film disposed in a plurality ofseparated coils of different diameters located in the same plane andcorresponding to the said coil chambers, means located between theannular coils for feeding the film between the same, means for feedingthe film into the casing, and means for feeding the film out of thecasing.

13. In a film magazine for a projecting machine,the combination of acasing, a central shaft in the casing, means for supporting and holdinga supply of film consisting of a plurality of separate concentricannular coils of different diameters substantially co-axial with thesaid shaft, and with the annular coils in the same plane, rotary meansfor engaging the coils to cooperate in effecting a rotation of thecoils, feeding mechanism disposed between the coils for feeding the filmin a general radial direction from one annular coil to another, meansfor driving the said feeding mechanisms from the said shaft, means forfeeding film into the casing, and means for feeding film out of thecasing.

14. In a film magazine for a projecting machine, the combination of acasing, a central shaft in the casing, means for supporting a supply offilm consisting of a plurality of separate concentric annular coilssubstantially co-axial with the said shaft, rotary means for engagingthe coils to cooperate in efiecting a rotation of the coils, feedingmechanism disposed between the coils for feeding the film from one coilto another, means for driving the said feeding mechanisms from the saidshaft, means for feeding film into the casing, means for feeding filmout of the casing, and means for driving said last named means from thesaid central shaft.

15. In a film magazine for a projecting machine, the combination of acasing, a rotary backplate in the casing in a substantially verticalplane, for engaging the side of a coil of film held in the casing andmounted to rotate on a substantially horizontal axis, a cover plate forthe front of the casing, rollers mounted in the cover plate for engagingthe forward side of the coil with resilient means located at each end ofeach roller for yieldingly pressing them against the coil, and means forrotating the back-plate to cause rotation of the coil.

16. In a film magazine for a projecting machine, the combination of acasing, a rotary back-plate mounted in the casing for engaging the sideof a coil of film held in the casing, a cover plate for the forward sideof the casing, means for rotating the back-plate on a substantiallyhorizontal axis, said cover plate having a guide opening thereinsubstantially on the axis of rotation of the hack-plate, a feed-rollermounted on the cover plate adjacent said guide opening, a gear wheelcoaxial with the back-plate and carried thereby, and a pinion carried bythe cod-roller and meshing with the said gear wheel or feeding film fromthe inside of the coil out- ;rari'ily through said guide opening.

17. In a film magazine for a projecting machine, the combination of acasing, a rotary backplate in the casing in a substantially vertical 1'ane, for engaging the side of a coil of film held in the casing. andmounted to rotate on a substantially horizonta axis, a cover plate forthe front of the casing, radially disposed rollers mounted in the coverplate for engaging the forward side of the coil, a spring at each end ofeach roller for pressing the rollers against the side of the coil tohold the coil against the back-plate, and means for rotating theback-plate.

18. In a film magazine for a projecting machine, the combination of acasing, a rotary backplate mounted in the casing for engaging the sideof a coil of film held in the casing, a cover plate for the forward sideof the casing, rollers mounted on the inner side of the cover plate forsupporting the coil of film, means for rotating the back-plate on asubstantially horizontal axis, a gear wheel carried coaxialiy by theback-plate, a feed-roller rotatably mounted in the cover plate andhaving a pinion at its inner end for engaging the said gear wheel forrotating the feed-roller when the back-plate rotates, said cover platehaving a guideway therein extending from a point near the said axis ofrotation for guiding the film outwardly from the casing as it leavessaid feedroller. I

19. In a film magazine for a projecting machine, the combination of acasing, a rotary backplate mounted in the casing for engaging the sideof a coil of film held in the casing, a hinged cover plate for theforward side of the casing, rollers mounted on the inner side of thecover plate for supporting the coil of film, means for rotating theback-plate on a substantially horizontal axis, a gear wheel carriedcoaxially by the back-plate, a feed-roller rotatably mounted in thecover plate and having a pinion at its inner end for engaging the saidgearwlieel for rotating the feed-roller when the back-plate rotates,said pinion having a shaft with a head carried thereby on the exteriorof the cover plate and enabling the pinion to be rotated by hand whenthe cover plaie is swung on its hinges into its closed position, saidcover plate having a guideway therein extending from a point near thesaid axis of rotatien for guiding the film outwardly from the casing asit leaves said feed-roller.

20. In a film magazine for a projecting machine, the combination of acasing, a central shaft in the casing, means for supporting and holdinga supply of film consisting of a plurality of separate concentricannular coils of different diameters substantially coaxial with the saidshaft, and with the annular coils in the same plane, rotary means forengaging the coils to cooperate in effecting a rotation of the coils, acover plate for the casing, a feed-roller having a shaft rotatablymounted in the cover plate and having a pinion at its inner end, adriven gear wheel for meshing with the pinion to drive the same, aplurality of feed-rollers having shafts rotatably mounted in 7 saidcover plate for engaging the film between the said separate concentriccoils, and means carried on the cover plate driven by the shaft of saidpinion for driving the second-named feed rollers.

21. In a film magazine for a projecting machine, the combination of acasing, a rotary backplate in the casing in a substantially verticalplane for engaging the side of a coil, a coil held in the casing andmounted to rotate on a substantially horizontal axis, a cover plate forthe front of the casing, conical rollers mounted in the cover plate forengaging the forward side of the coil mounted to rotate on substantiallyradial axes, means for yieldingly pressing each roller individuallyagainst the coil, and means for rotating the back-plate to causerotation of the coil, said conical rollers operating to rotate by theircontact with the side of the coil and tending to separate the layers ofthe coil and reduce rubbing of the layers of the coil on each other.

ALBERT B. SCO'I'I.

